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29640-38-8

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29640-38-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 29640-38-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,6,4 and 0 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 29640-38:
(7*2)+(6*9)+(5*6)+(4*4)+(3*0)+(2*3)+(1*8)=128
128 % 10 = 8
So 29640-38-8 is a valid CAS Registry Number.

29640-38-8Downstream Products

29640-38-8Relevant articles and documents

Synthesis of potentially β-blocking practolol derivatives: (E + Z)-3- [4-(3-iodoprop-2-enyloxycarbonylamino)phenoxy]-1-(isopropylamino)propan-2-ol

Apparu, Marcel,Ben Tiba, Younes,Leo, Pierre-Marc,Fagret, Daniel

, p. 1007 - 1012 (2000)

The iodinatied carbamates 3 (E + Z), with potential β-blocking properties, were synthesized. The first route chosen, from 4-aminophenol and the chloroformate 7, had to be abandoned because of the formation of the oxazolidinone 10 during the epoxidation step. The aminoalcohol 17 prepared from the practolol 1 finally gave the target compounds by condensation with the iodoallylic chloroformates 8 (E + Z). The secondary Boc-protected amine function was regenerated without removing the carbamate function situated in the p-postion, by using mild reaction conditions (1 N HCl).

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